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Biochemical Engineering - Downstream Processing

Exercise : Downstream Processing - Section 1
  • Downstream Processing - Section 1
21.
For cost analysis in a fermentor system, the depreciation cost varies from
5-6% of the capital cost
6-7% of the capital cost
6-10% of the capital cost
8-10% of the capital cost
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Micro filtration refers to the separation of suspended material such as bacteria by using a membrane with spore sizes of
0.02 to 10μm
1-10A°
20-30μm
10-200A°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Start up expenses in a fermentation industry varies from
0-5% of the capital cost
10-15% of the capital cost
5-10% of the capital cost
15-20% of the capital cost
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The solvent flux across the membrane can be expressed as (where A is the area, Lp is the membrane permeability, σ is the reflection point, Δp is applied pressure and Δπ is the osmotic pressure)
J = Lp(Δp - σΔπ)
J/A = Lp(Δp - σΔπ)
J = Lp/σΔπ
J/A = Lp/Δp
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Which of the following is considered as a pretreatment to the biological feeds?
Heating to denature the proteins
Addition of filter aids to increase the porosity
Addition of electrolytes
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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